In the result of a ‘no deal’ Brexit, parts of the UK could be left in different time zones.

There is a plan within the EU to scrap the changing of the clocks system that happens twice a year because it is ‘unpopular’ meaning EU member countries would choose to permanently adopt summer or winter time.

Theresa May is coming under increasing pressure to secure a deal on Brexit (Picture: Getty)

European Commission President Jean-Claude Juncker said millions ‘believe that in future, summer time should be year-round’ (Picture: EPA)

What it means for the UK is that Northern Ireland will have to decide whether or not to align its clocks with Ireland or Britain.

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Belfast could therefore be an hour out of sync with either London or Dublin, peers have warned.

They said failing to secure an exit agreement would mean rules on the matter in relation to Northern Ireland would ‘fall away’.

‘If the UK then decided to maintain summertime arrangements, Northern Ireland (assuming the devolved institutions have been re-established) would have to choose between having a one-hour time difference for half the year either with the Republic of Ireland or with the rest of the UK,’ a report by a Lords committee said.

The clock changes aren’t likely to be brought in across the EU until after the UK has left on March 29 next year but Britain would have to adopt the changes during a transition period, peers said.

The issue of the Irish border has become a sticking point in Brexit negotiations and could land us with a no deal scenario (Picture: PA)

At the moment, every EU member state – like Britain – switched to summer time on the last Sunday of March and to winter time on the last Sunday of October, but the European Commision wants that to stop.

EU countries fall into three timezones – Greenwich Mean Time, Central European Time and Eastern European Time.

The move would ‘not affect the choice of time zone’ and it would ‘ultimately remain each member state’s decision whether to go for permanent summer or wintertime (or a different time)’, the proposals state.

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European Commission President Jean-Claude Juncker has said millions of people ‘believe that in future, summer time should be year-round, and that’s what will happen’.

The move needs the support of all EU countries and backing from MEPs to become law.

The North Antrim coast in County Antrim, Northern Ireland, which may have to decide which time it sticks with (Picture: Getty)

But peers on the EU Internal Market sub-committee said the House of Lords should issue a ‘reasoned opinion’ that the decision to end daylight saving clock changes should not be made by the EU.

The recommendation will be debated on Wednesday.

Committee chairman Lord Whitty said: ‘The European Commission’s proposal to end seasonal time changes goes beyond its remit and is not in compliance with the principle of subsidiarity.

‘We are therefore recommending that the House of Lords issues a reasoned opinion.’